Method and dislay device for uniform image display

Abstract

A method and a display device for uniform image display are provided. The method is used for a full in-cell display device and includes steps of: a display device inputting a first image signal, compensating the first image signal according to image compensation data to obtain a third image signal and displaying the third image signal. The display device includes a color filter substrate, an array substrate and a liquid crystal layer disposed therebetween. A side of the array substrate facing toward the liquid crystal layer is disposed touch electrodes. The touch electrodes are combined with common electrodes of the array substrate and arranged on the array substrate in a matrix. The compensation data are common electrode voltage offsets determined according to differences between grayscale information of the first image signal and an original second image signal. Accordingly, the invention can effectively improve the displayed image uniformity.

Description

TECHNICAL FIELD[0001]The invention relates to the field of display technology, and particularly to a method and a display device for uniform image display.DESCRIPTION OF RELATED ART[0002]A touch screen, also known as touch panel, is an inductive type liquid crystal display device which can receive an input signal triggered by a touch object such as finger. When a graphic button on a screen is touched, a haptic feedback system on the screen can determine an occurred position of the touch operation based on a preset driving scan mode and then determine the clicked graphic button as well as the type of instruction. Compared with the traditional mechanical press-button panel, the touch screen is more convenient and therefore has been widely used.[0003]A projected capacitive touch screen is one of commonly used touch screens and also is a touch technology of using a capacitance change generated when a finger approaches a capacitive touch panel. Such touch technology is classified into se...

AI Technical Summary

Benefits of technology

The invention provides a method and display device for uniform image display without changing the structure of the display device. The method compensates image signals based on data to ensure voltage differences between input signals and common electrodes are balanced, resulting in a more uniform display and improved user experience. This does not increase the cost and can be achieved without changing the existing full in-cell display device structure.

Problems solved by technology

However, the full in-cell technology integrates touch electrodes into common electrodes of an array substrate, the structure inevitably is more complex with respect to a mere display panel, the number of wires connected to a same electrode relatively is increased, but the space of the display screen is limited and the distribution space of signal wires also is limited, so that in the limited space, lengths of wires connected to pixel electrodes and common electrodes of the array substrate are not equal, and finally voltages applied on liquid crystal pixels are not equal, the displayed image is non-uniform as a result.

But the above-described method not only requires improving the array substrate manufacturing process itself but also requires adding additional transistors, so that the structure of the full in-cell display device is more complex and the transistor cost is increased.

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